UPSD3253A-40T6T datasheet(9/175 Pages) STMICROELECTRONICS

Part #	UPSD3253A-40T6T

Description	Flash Programmable System Devices with 8032 Microcontroller Core

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV

Peripheral I/O Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

JTAG In-System Programming (ISP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Peripheral I/O Mode (Figure 64.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Port Operating Modes (Table 91.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Port Operating Mode Settings (Table 92.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

I/O Port Latched Address Output Assignments (Table 93.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Port Configuration Registers (PCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Port Configuration Registers (PCR) (Table 94.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Port Pin Direction Control, Output Enable P.T. Not Defined (Table 95.) . . . . . . . . . . . . . . . . . . . . 129

Port Pin Direction Control, Output Enable P.T. Defined (Table 96.) . . . . . . . . . . . . . . . . . . . . . . . 129

Port Direction Assignment Example (Table 97.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Port Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Drive Register Pin Assignment (Table 98.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Ports A and B – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Port A and Port B Structure (Figure 65.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Port C – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Port C Structure (Figure 66.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Port D – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Port D Structure (Figure 67.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

External Chip Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Port D External Chip Select Signals (Figure 68.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

POWER MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

APD Unit (Figure 69.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Enable Power-down Flow Chart (Figure 70.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Power-down Mode’s Effect on Ports (Table 100.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

PLD Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

PSD Chip Select Input (CSI, PD2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Input Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Input Control Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Power Management Mode Registers PMMR0 (Table 101.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Power Management Mode Registers PMMR2 (Table 102.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

APD Counter Operation (Table 103.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

RESET TIMING AND DEVICE STATUS AT RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Warm RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

I/O Pin, Register and PLD Status at RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Reset of Flash Memory Erase and Program Cycles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Reset (RESET) Timing (Figure 71.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Status During Power-on RESET, Warm RESET and Power-down Mode (Table 104.). . . . . . . . . 140

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